This manual covers motorcycles from the 2000 to 2006 model years, including the EXC, MXC, SMR, SX, and SXS Racing Crate lines. These high-performance, liquid-cooled, 4-stroke off-road machines are renowned for their 'Ready to Race' philosophy, emphasizing durability and competitive performance in disciplines such as Enduro and Motocross. Models within this range feature single-cylinder engines with displacements from 250cc up to 610cc, equipped with hydraulic clutch systems and chain drive. Engineering quality is evident in their robust chromoly steel trellis frames and class-leading suspension components, which have contributed to numerous championship victories. This comprehensive workshop service and repair manual provides detailed, step-by-step instructions for all aspects of maintenance, diagnostics, and repair. It covers engine mechanicals, fuel and ignition systems, cooling, transmission, suspension, brakes, electrical systems, and chassis components. Owners and technicians will find essential information on routine maintenance tasks, troubleshooting common issues, and complete rebuild procedures, along with critical technical data such as torque specifications and fluid capacities. The manual is designed to empower users to maintain their motorcycles effectively, ensuring optimal performance and longevity.